Sewing-machine



(No Model.)

. W. A. MACK.

SEWING MACHINE.

N0. 559,493. v Patented May 5, 1896.

W7zssaa 1 M ,1537/6 73597: L

NITE STATES \VILLIAM- A. MACK, OF NORWALK, OHIO, ASSIGNOR TO THESTANDARD SEWING MACHINE COMPANY, OF OHIO.

SEWING-MACHINE.

SPECIFICATION forming part of Letters'Patent No. 559,493, dated May 5,1896 Original application filed February 5, 1891, Serial No- 380,304.Divided and this application filed April 1, 1893. Serial No. 468,637.(No model.)

To aZZ whom, it may concern.-

Be it known that I, \VILLIAM A. MACK, a citizen of the United States,and a resident of the city of Norwalk, county of Huron, and State ofOhio, have invented new and useful Improvements in Sewing-Machines, ofwhich the following description, taken in connection with the drawingsherewith accompanying, is a specification. 1

My present invention, which forms a division of an application of minenow pending, filed February 5, 1891, Serial No. 380,304, relatcs tosewing-machines of the rotary-shuttle class; and it consists in animproved device or mechanism for guiding and retaining the bobbin andits case in proper position within the shuttle, as will hereinafter bedescribed in detail, and pointed out in the claims.

Referring to the drawings, Figure 1 represents an end view of thebed-plate of a sewing-machine having my improved mechanism in properposition thereon. Fig. 2 is a top view of the bobbin-retaining devicedetached from position on the bed-plate. Fig. 1 represents a plan viewof the bobbin-case removed from its position in the shuttle.

To explain in detail, or represents the bedplate of the machine; Z), theshuttle; Z), the shuttle-raceway casement; c, the bobbin, and c thebobbin-case. The latter, in the present instance shown, consists of acylindrical shell having a face-plate 0 which latter is provided with acentrally-located spindle, which, when the case is inserted into theshuttle, is adapted to extend within the hollow spindle in the latter,on which the bobbin is located, and thus allow movement of the shuttleand bobbin, while the bobbin-case remains stationary.

The particular construction of the abovementioned parts as set forth isnot of my present invention, however, and will not be described indetail herein.

According to my invention the bobbin-case, which is adapted to beremovably held in position within the shuttle by a retainer (1, isprovided, in the present instance shown, with an elongated opening 0extending across its periphery, forming a guideway, and a short radialgroove 0 in its face extending to said peripheral guideway and forming aseat, which said guideway and seat are adapted to receive a projection011 the retainer cl, whereby the case is guided to its proper andoperative position when inserted into the shuttle and held from rotarymovement in a manner as will be described.

The retainer d consists of a pivoted lever, which is supported, in thepresent instance shown, upon a plate or block 6, secured to theshuttle-race casement and is normally held with one end in a position toengage with the face of the case, as shown in Fig. 1, to retain thelatter Within ,the shuttle. The case-engaging end of said retainer ismovably held in such normal position by means of a spring 61 acting uponits opposite end, as shown.

The retainer d is provided with a projection (1 on its under side whichis adapted to extend into the said peripheral guideway c in thebobbincase when the latter is being withdrawn from or entered into itsposition in the shuttle, in order that the case will necessarily beguided to its operative position when placed in said shuttle. Theretainer is adapted to be raised from engagement with the face of thecase to allow for the removal or insertion of the latter, but is limitedin such upward movement in a manner as will be described in order toprevent the projection cl thereof from being withdrawn from the saidperipheral guideway c in the bobbin-case when the latter is beingremoved from or insorted into the shuttle, as described. The movement ofthe retainer, which also becomes a guide by reason of the constructionas described, is limited by a projection 61 on its rear side whichextends within a slot 6, formed in the supporting-plate e, and engageswith the opposite walls thereof to limit the movement of the retainer,as described.

The projection d on the retainer d extends beyond the edge of the latteron the rear side thereof, as shown in Fig. 2, to form a projection toextend into the said seat 0 in the face of the case when the retainer isin its normal retaining position in order to hold the case from rotarymovement.

One end of the lever or retainer d projects I slightly outward fromtheface of the case and is of sufficient length to form a convenient handleto enable the same to be easily operated.

Having thus set forth my invention, what I claim as new, and desire tosecure by Letters Patent of the United States, is

1. In a sewing-machine, the combination with the shuttle, of abobbin-case provided with a guideway extending across its periphery, acombined retainer and guide for the bobbin-case provided with aprojection located in a position to extend into the said guideway in thebobbin-case when the latter, with its in-closed bobbin, is being removedfrom, or inserted into, the shuttle, means to hold said retainernormally in a position to retain said case in the shuttle, and means tolimit the movement of said retainer to prevent the projection thereoffrom being withdrawn from said guideway when the retainer is operated toenable the removal or insertion of said case, substantially as describedand for the purpose set forth.

2. In a sewing-machine, the combination with the shuttle, of abobbin-case provided with a guideway extending across its periph cry anda radial groove in its face connecting with said guideway, a combinedretainer and guide for the bobbin-case consisting of a pivoted leverprovided with a projection located in a position to extend into the saidguideway in the bobbin-case when the latter, with its inclosed bobbin,is being inserted into the shuttle, a spring to hold said retainernormally in a position to retain said bobbin-case in the shuttle andwith the projection thereon extending into the said radial groove in thebobbin-case, and means to limit the movement of said retainer to preventthe projection thereof from being withdrawn from said guide-way in thebobbin-case when the retainer is operated to enable the insertion orremoval of said case, substantially as described and for the purpose setforth.

WILLIAM A. MACK. \Vitnesses:

EDWARD L. DAY, GEO. P. SMITH.

